dqnek0079
2014-09-09 10:04
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已采纳

如何检查我的程序是针对32位还是64位处理器编译的?

Is there any standard method to check os is 32 or 64 bit? I've check runtime & os package, but can not found. http://play.golang.org/p/d6NywMDMcY

package main

import "fmt"
import "runtime"

func main() {
    fmt.Println(runtime.GOOS, runtime.GOARCH)
}
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2条回答 默认 最新

  • dongyouzhui1969 2014-09-09 10:10
    已采纳

    What do you mean by a 32- or 64-bit OS? For example, GOARCH=amd64p32, which is used for GOOS=nacl, is amd64 64-bit instructions with 32-bit pointers and 32-bit type ints and uints.

    package main
    
    import (
        "fmt"
        "runtime"
        "strconv"
    )
    
    func main() {
        const PtrSize = 32 << uintptr(^uintptr(0)>>63)
        fmt.Println(runtime.GOOS, runtime.GOARCH)
        fmt.Println(strconv.IntSize, PtrSize)
    }
    

    Playground: http://play.golang.org/p/TKnCA0gqsI

    Output:

    nacl amd64p32
    32 32
    

    and

    linux amd64
    64 64
    
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